ABAP Select data from SAP table BAPIACGL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPIACGL table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to BAPIACGL. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the BAPIACGL table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_BAPIACGL TYPE STANDARD TABLE OF BAPIACGL,
      WA_BAPIACGL TYPE BAPIACGL,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <BAPIACGL> TYPE BAPIACGL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPIACGL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPIACGL
  INTO TABLE IT_BAPIACGL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIACGL
*  INTO TABLE @DATA(IT_BAPIACGL2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_BAPIACGL INDEX 1 INTO DATA(WA_BAPIACGL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPIACGL ASSIGNING <BAPIACGL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIACGL>-PAYTYPE = 1.
<BAPIACGL>-BILL_DATE = 1.
<BAPIACGL>-DIFF_INV = 1.
<BAPIACGL>-PURCH_ORG = 1.
<BAPIACGL>-PUR_GROUP = 1.

ENDLOOP.

LOOP AT IT_BAPIACGL INTO WA_BAPIACGL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIACGL-COMP_CODE, sy-vline,
  WA_BAPIACGL-DOC_DATE, sy-vline,
  WA_BAPIACGL-REF_DOC_NO, sy-vline,
  WA_BAPIACGL-PAYMT_REF, sy-vline,
  WA_BAPIACGL-BILL_TO, sy-vline,
  WA_BAPIACGL-SALESORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIACGL you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_BAPIACGL TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_BAPIACGL INTO WA_BAPIACGL.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field DIFF_INV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIACGL-DIFF_INV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIACGL-DIFF_INV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BILL_TO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIACGL-BILL_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIACGL-BILL_TO.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BAPIACGL_STR, 
PAYTYPE TYPE STRING,
BILL_DATE TYPE STRING,
DIFF_INV TYPE STRING,
PURCH_ORG TYPE STRING,
PUR_GROUP TYPE STRING,
COMP_CODE TYPE STRING,
DOC_DATE TYPE STRING,
REF_DOC_NO TYPE STRING,
PAYMT_REF TYPE STRING,
BILL_TO TYPE STRING,
SALESORG TYPE STRING,
DISTR_CHAN TYPE STRING,
DIVISION TYPE STRING,
INV_LIST_DATE TYPE STRING,
ACCTSTATUS TYPE STRING,
MAX_LINES TYPE STRING,
REF_DOC_NO_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIACGL_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_BAPIACGL_STR-PAYTYPE sy-vline 
WA_BAPIACGL_STR-BILL_DATE sy-vline 
WA_BAPIACGL_STR-DIFF_INV sy-vline 
WA_BAPIACGL_STR-PURCH_ORG sy-vline 
WA_BAPIACGL_STR-PUR_GROUP sy-vline 
WA_BAPIACGL_STR-COMP_CODE sy-vline 
WA_BAPIACGL_STR-DOC_DATE sy-vline 
WA_BAPIACGL_STR-REF_DOC_NO sy-vline 
WA_BAPIACGL_STR-PAYMT_REF sy-vline 
WA_BAPIACGL_STR-BILL_TO sy-vline 
WA_BAPIACGL_STR-SALESORG sy-vline 
WA_BAPIACGL_STR-DISTR_CHAN sy-vline 
WA_BAPIACGL_STR-DIVISION sy-vline 
WA_BAPIACGL_STR-INV_LIST_DATE sy-vline 
WA_BAPIACGL_STR-ACCTSTATUS sy-vline 
WA_BAPIACGL_STR-MAX_LINES sy-vline 
WA_BAPIACGL_STR-REF_DOC_NO_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.